<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div id="output"></div>
<script src="/jquery-1.10.2.min.js"></script>
<script type="text/javascript" src="/jquery.qrcode.min.js"></script>
<script>

    var timestamp = new Date().getTime() + "";
    timestamp = timestamp.substring(0, timestamp.length-3);
    jQuery(function(){
        jQuery('#output').qrcode(timestamp);
    });

    var websocket = null;
    //判断当前浏览器是否支持WebSocket
    if ('WebSocket' in window) {
        websocket = new WebSocket("ws://10.0.83.121:8080/websocket/"+timestamp);
    }
    else {
        alert('当前浏览器  Not support websocket');
    }
    //连接发生错误的回调方法
    websocket.onerror = function () {
        console.log("WebSocket连接发生错误");
    };
    //连接成功建立的回调方法
    websocket.onopen = function () {
        console.log("WebSocket连接成功"+ timestamp );
    }
    //接收到消息的回调方法
    websocket.onmessage = function (event) {
        window.location.href="http://10.0.83.121:8080/qrcodelogin/success";
    }
    //连接关闭的回调方法
    websocket.onclose = function () {
        console.log("WebSocket连接关闭");
    }
    //监听窗口关闭事件，当窗口关闭时，主动去关闭websocket连接，
    //防止连接还没断开就关闭窗口，server端会抛异常。
    window.onbeforeunload = function () {
        closeWebSocket();
    }
    //关闭WebSocket连接
    function closeWebSocket() {
        websocket.close();
    }
</script>
</body>
</html>